The Rathburn Crabwalk is just as inventor77
When 1800mm is the largest pipe in the drain you know you're in for a back breaking time.
Despite the the small size this drain was still fun to visit.
The outfall is a different design than other ones in that area. The large grate is really unmoveable without some non-human device to lift it (unless you're a big time weight lifter).
The 1800mm RCP splits early on and ends just a short ways after that in a large grated catch basin of sorts.
Venturing up the other pipe, in the sub-1600mm range, didn't last very long. A short crabwalk back out to Etobicoke Creek and that was that.
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